JP5074438B2 - Segment feeder - Google Patents

Description

  The present invention relates to a segment supply device that can suppress the swinging movement of a segment supplied from a lifting position to an erector side as much as possible.

  Conventionally, there is a segment supply device that feeds a segment to or near the erector by lifting the segment carried into the shield tunnel with a hoist and running the hoist that lifted the segment along the hoist rail to the erector side. Are known.

  For example, “Segment Conveying Device and Method” of Patent Document 1 is a case where a segment truck is arranged in a plane offset from the center line of the shield tunnel in a shield tunnel, particularly a small-diameter shield tunnel. Even if there is a problem, it will be possible to safely transport the segment from the segment cart to the vicinity of the erector, and when constructing the shield tunnel, the segment cart to load the segment should be planar from the center line of the shield tunnel. It is shifted to the side. The segment conveying device includes a hoist rail that extends from the segment carriage to the vicinity of the erector, and a hoist that suspends a segment and can travel along the hoist rail. The hoist rail has a front end portion located on the center line of the shield tunnel, a middle portion bent in an S shape, and a rear end portion located on the center line of the segment carriage in plan view.

  Specifically, when the suspended segment is moved along the hoist rail to the upper part of the roller conveyor, the hoist tunnels from above the center line of the segment carriage in the middle portion of the S-shaped hoist rail. The segment is transported by moving on the center line.

JP 2007-231560 A

  By the way, in Patent Document 1, it is necessary to install a hoist rail having a considerable length in an S-shape within a shield tunnel, and in particular, such an S-shaped hoist rail in a small-diameter shield tunnel. It was necessary to secure a considerable space in the tunnel for the hoist rail, and also had to consider interference with other equipment, which was complicated. .

  In addition, when the hoist passes through the S-shaped intermediate portion of the hoist rail, the segment suspended by the hoist may swing due to the bending, and there is a problem that safety is a concern. It was.

  On the other hand, as shown in FIG. 3, a hoist that travels along a hoist rail c installed in the tunnel a through a segment b carried in a lifted position Y that is different from the vertical center line position X of the shield tunnel a. There is a case where it is lifted by a lifting tool e suspended and supported by d. Since the center of the lifting tool e is in a natural state and is preferably set to the center line position X of the tunnel a, the lifting tool e is shifted to the lifting position Y when the segment b is suspended.

  Even in such a lifting operation of the segment b, from the moment when the loaded segment b is lifted, the segment b swings left and right along the cross section of the tunnel a, and there is a problem that safety is a concern. It was.

  In any case, the lifted position of the segment differs with respect to the vertical center line position of the tunnel. There was a problem that it shakes greatly.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a segment supply device that can suppress as much as possible the swinging motion of the segments supplied from the lifting position to the erector side.

  The segment supply device according to the present invention includes a segment carried in a lifting position that is different from the vertical center line position of the cross section of the tunnel in a shield tunnel, along a hoist rail installed in the tunnel. In a segment supply device that is lifted by a hoist that travels and is supplied to an erector or the vicinity thereof, a rail that is suspended by the hoist so as to be raised and lowered and supported horizontally along the transverse section of the tunnel, and a reciprocating motion to the rail A suspension hook that is movably provided and that locks the segment, and a lock means that locks the suspension hook at the lifting position of the segment and the vertical center line position of the tunnel are provided.

  The hoist rail is installed according to a vertical center line position of the tunnel.

  In the segment supply apparatus according to the present invention, the swinging motion of the segment supplied from the lifting position to the erector side can be suppressed as much as possible.

It is a longitudinal cross-sectional view of the shield tunnel for demonstrating suitable one Embodiment of the segment supply apparatus which concerns on this invention. In FIG. 1, it is an AA arrow cross-sectional view. It is a cross-sectional view of a shield tunnel showing an example of a conventional segment supply device.

  Hereinafter, a preferred embodiment of a segment supply apparatus according to the present invention will be described in detail with reference to the accompanying drawings. As is well known, various types of shield tunnels are known, such as those for small-diameter power, gas, and communication, as well as water and sewage systems, railways, roads, and common grooves.

  As shown in FIG. 1, the shield tunnel 1 is excavated by the shield machine 2, and the excavated soil carried out by the screw conveyor 3 is sent out by the earth discharging conveyor 4, and the segments 6 are sequentially assembled by the erector 5. It will be built. The segment 6 is fed from the roller conveyor 7 to the erector 5 that is installed with its center aligned with the vertical center line position of the shield tunnel 1 (see C in FIG. 2).

  The segment 6 is loaded on the segment carriage 9 that travels on the traveling rail 8 laid in the shield tunnel 1 and is carried into the shield tunnel 1. The segment carriage 9 is stopped at the lifting position D of the segment 6 by the hoists 10 and 10. Supply operation of the segment 6 from the lifting position D to the roller conveyor 7 in the vicinity of the erector 5 is performed by the hoist 10, 10 and the pair of left and right hoist rails 11, 11 that run the hoist 10, 10.

  The hoist rails 11 are provided on the ceiling of the shield tunnel 1 along the length direction of the shield tunnel 1. A pair of right and left hoist rails 11, 11 are provided straight from the segment carriage 9 side toward the roller conveyor 7 side in accordance with the center of the erector 5, that is, the vertical center line position C of the shield tunnel 1. The number of hoist rails 11 is not limited to a pair of left and right, and may be any number, and in any case, the center position of the hoist rail 11 to be installed is the center line in the vertical direction of the cross section of the shield tunnel 1. It is set straight according to the position C.

  FIG. 2 shows a cross section of the shield tunnel 1. Below the inside of the shield tunnel 1, a travel rail 8 on which the segment carriage 9 travels and a travel rail 12 for a subsequent carriage of the shield machine 1 are arranged side by side.

  For example, in order to secure a space for installing other necessary equipment such as the traveling carriage 12 for the subsequent carriage, the traveling rail 12 for the segment carriage 9 that carries the segment 6 to the lifting position D of the segment 6 is tunneled. 1 so that the lifted position D of the segment 6 loaded in the shield tunnel 1 is horizontal with respect to the vertical center line C of the cross section of the shield tunnel 1. It is in a different position, biased to the left in the direction.

  A pair of right and left hoist rails 11, 11 are disposed on the ceiling inside the shield tunnel 1 with a soil removal conveyor 4 interposed therebetween. Each hoist rail 11, 11 is provided with a pair of left and right hoists 10, 10 running along the hoist rails 11, 11. These side-by-side hoists 10 and 10 are run in a parallel state and stopped. The hoists 10 and 10 are adapted to lift the segment 6 and supply it to the roller conveyor 7. Of course, the hoists 10 and 10 may be directly supplied to the erector 5.

  The pair of left and right hoists 10 and 10 have lifting chains 13 and 13 respectively. The ends of these chains 13 and 13 are spanned between the chains 13 and 13 and rails 14 made of a C-type channel material or the like. Are concatenated. Thus, the rail 14 is suspended from the hoists 10 and 10 via the chains 13 and 13 so as to be movable up and down.

  Moreover, the rail 14 is supported horizontally along the cross section of the shield tunnel 1 by making the suspending height by each hoist 10 and 10 correspond. The center of gravity of the rail 14 is preferably set at the center between the hoists 10 and 10. Instead of the chains 13 and 13, a wire or a rod-shaped member capable of supporting a compressive force may be used.

  The rail 14 is provided with one suspension hook 15 that can reciprocate in the length direction, that is, in the left-right direction in the cross section of the shield tunnel 1. The suspension hook 15 includes two wheels 16 that travel along the rail 14, a bracket 17 that is suspended from the wheel 16, and a hook portion 19 that is rotatably connected to the bracket 17 via a pin 18. Is done. The wheels 16 may be manually rolled or self-propelled.

  In the case of the self-propelled type, it is preferable to move the segment 6 at an extremely low speed so that a large acceleration is not applied to the segment 6. The hook portion 19 is detachably locked to a locking portion (not shown) of the segment 6. Accordingly, the segment 6 can be lifted by locking the segment 6 to the hook portion 19 and raising the rail 14 with the hoists 10 and 10, and by lowering the rail 14 and releasing the hook portion 19, Segment 6 can be taken down.

  Further, the suspension position of the segment 6 can be moved rightward or leftward within the shield tunnel 1 by moving the suspension hook 15 along the rail 14.

  The rail 14 is provided with locking means 20 for locking the suspension hook 15 at each of the segment lifting position D corresponding to the stop position of the segment carriage 9 and the vertical center line position C of the shield tunnel 1. In the present embodiment, the left end portion of the rail 14 is set to the lifting position D, and the center in the length direction of the rail 14 is set to the center line position C.

  A plate 21 is provided at the left end of the rail 14 so as to block the end of the C-type channel so that the wheel 16 contacts and stops. In the center of the rail 14, a through bolt 22 is fastened that penetrates the rail 14 between the upper piece and the lower piece of the C-type channel and that the wheel 16 contacts and stops. In addition, the rail 14 is provided with a stopper 23 that can move up and down and descends toward the moving path of the wheel 16. The lock means 20 includes the plate 21, the through bolt 22, and the stopper 23.

  When the wheel 16 moves to the left end of the rail 14 that is the lifting position D of the segment 6, the stopper 23 is lowered to sandwich the wheel 16 between the plate 21 and the stopper 23, and the lifting hook 15 is lifted to the lifting position D. Can be fixed to. Further, when the wheel 16 moves to the center of the rail 14 which is the vertical center line position C of the shield tunnel 1, the stopper 23 is lowered to sandwich the wheel 16 between the through bolt 22 and the stopper 23, and the hanging hook 15 can be fixed to the center line position C.

  Next, the operation of the segment supply device according to the present embodiment will be described. First, the segment 6 is carried into the lifting position D by the segment carriage 9. The hoists 10 and 10 traveling along the hoist rails 11 and 11 are stopped in accordance with the lifting position D.

  Next, the locking means 20 is released, and the suspension hook 15 is moved to the lifting position D and stopped. Next, the suspension hook 15 is fixed to the lifting position D by the locking means 20. Next, the rail 14 is lowered by the hoists 10 and 10, and the segment 6 is locked to the hook portion 19 of the hanging hook 15. Thereby, preparation for lifting is completed.

  Next, the rails 14 are lifted by the hoists 10 and 10, and the segment 6 is lifted toward the position directly above the lifted position D via the hanging hook 15. When the hoist is lifted to the required height, the hoist 10, 10 stops the rail 14 from rising. Next, the locking means 20 is released so that the hanging hook 15 can be moved. At this time, since the rail 14 is suspended and supported by the pair of left and right hoists 10, 10, the rail 14 hardly tilts.

  Next, the hanging hook 15 is moved to the center of the rail 14, that is, the center line position C in the vertical direction of the shield tunnel 1, thereby moving the segment 6 to the center line position C. Also in this case, the rail 14 suspended and supported by the pair of left and right hoists 10, 10 maintains a horizontal state. It is desirable to move the hanging hook 15 as gently as possible, so that the left and right shaking of the segment 6 can be suppressed.

  When the hanging hook 15 reaches the center of the rail 14, the hanging hook 15 is fixed to the center line position C by the locking means 20. Thereby, the movement of the segment 6 is completed.

  Then, the segment 6 can be supplied to the erector 5 or the roller conveyor 7 in the vicinity thereof by causing the hoists 10 and 10 to travel along the hoist rails 11 and 11. On the roller conveyor 7, the rails 14 are suspended downward by the hoists 10 and 10 while the position of the suspension hook 15 is fixed by the lock means 20. When the segment 6 is transferred to the roller conveyor 7, the locking of the segment 6 by the hook portion 19 of the hanging hook 15 is released.

  Thereafter, the hoist 10, 10 lifts the rail 14, and the hoist 10, 10 travels along the hoist rail 11, 11 toward the segment cart 9 side.

  In the segment supply device according to the present embodiment described above, a rail 14 that is suspended up and down by hoists 10 and supported horizontally along the cross section of the shield tunnel 1 and reciprocates to the rail 14. A suspension hook 15 that is movably provided and locks the segment 6, and a locking means that is provided on the rail 14 and locks the suspension hook 15 at the lifting position D of the segment 6 and the vertical center line position C of the shield tunnel 1. 20, the lifting of the segment 6 can be a lifting operation directly above the lifting position D, and then the segment 6 is moved to the center line position C of the shield tunnel 1 using the rail 14. And the segments do not swing during the transport to the erector side as in the background art. In the lifting position D of the supply operation to the erector 5 side, to be able to suppress as much as possible that the segments 6 are moved deflection, it is possible to improve safety.

  In this embodiment, since the locking means 20 for locking the suspension hook 15 is provided, the segment 6 can be lifted or lowered, or even while the segment 6 is being transported by the hoist rails 11 and 11. Further, it is possible to prevent the segment 6 from moving or swinging along the rail 14.

  Moreover, in this embodiment, since it is possible to install the hoist rails 11 and 11 according to the vertical center line position C of the shield tunnel 1, compared with the case where a hoist rail is made into S shape like background art. The necessary installation space for the hoist rails 11 and 11 can be narrowed. Especially when used in the shield tunnel 1 having a small diameter, the space efficiency can be improved, and interference with other equipment such as the soil removal conveyor 4 is also appropriate. Can be prevented.

  Moreover, it is possible to install the hoist rails 11 and 11 straight, and it is possible to prevent the segment 6 from swinging unnecessarily during the supply to the erector 5 side.

  Further, by suspending the rail 14 via the chains 13, 13, the swinging motion of the segment 6 can be suppressed as compared with the case where the rail 14 is suspended.

  In a state where the segment 6 is lifted at the center of the rail 14, the supply posture to the erector 5 may be secured by horizontally rotating the segment 6.

  It goes without saying that the movement of the hanging hook 15 and the locking and releasing of the locking means 20 may be performed by automatic control. Further, the suspension hook 15 may be moved by other slide methods or the like without depending on the wheels 16. Further, in the above embodiment, the locking means 20 is provided on the rail 14, but instead, it is provided on the hanging hook 15, and the hanging hook 15 is locked to the rail 14 at each position. Also good.

DESCRIPTION OF SYMBOLS 1 Shield tunnel 5 Elector 6 Segment 10 Hoist 11 Hoist rail 13 Chain 14 Rail 15 Suspension hook 20 Locking means C Position of centerline of shield tunnel in the vertical direction D Lifting position of segment

Claims (2)

In the shield tunnel, the segment carried in the lifting position that is different from the vertical center line position of the cross section of the tunnel is lifted by the hoist that runs along the hoist rail installed in the tunnel, and the elector or its In the segment supply device for supplying to the vicinity,
A rail that is suspended up and down on the hoist and supported horizontally along the cross section of the tunnel,
A suspension hook which is provided on the rail so as to be reciprocally movable and which locks the segment;
A segment supply device comprising: locking means for locking the suspension hook at a lifting position of the segment and a vertical center line position of the tunnel.   The segment supply device according to claim 1, wherein the hoist rail is installed in accordance with a vertical center line position of the tunnel.

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